Transcript

00:00:01

>> An explosion has been reported on a tube carriage at Parson's Green Station in West London. Passengers suffered facial burns after a white container blew up towards the back of the train, local media reported.>> Suddenly, I heard a big bang and I turned left and I saw the fire ball surge toward my side.

00:00:21

Meanwhile I heard a lot ladies screaming and crying, and people very panicky. And I get up and run towards the door and the people in front of me fell over. So people in the back of me pushed me and I fell over as well. On top of me and I saw people get burned.

00:00:42

>> Police and emergency services are there, alerted first by social media. Transport for London tweeted that it was investigating an incident at the station. Britain is on its second highest threat level, severe, after several attacks this year. Islamist militants attacked pedestrians on London and Westminster bridges. And in May a suicide bombing rocked an Ariana Grande concert killing 22 people.